SCS send blocked state. If the connection is waiting to send
  an SCS control block message, the SCS send blocked state
  indicates what kind of message it is waiting to send. Possible
  displays are as follows:

    ACCP_PEND - Waiting to send an accept request.
    CLEAR     - Not blocked.
    CON_PEND  - Waiting to send a connection request.
    CR_PEND   - Waiting to send credit.
    DCR_PEND  - Waiting to send credit in preparation for a disconnect.
    DISC_PEND - Waiting to send a disconnect request.
    REJ_PEND  - Waiting to send a reject request.